The Extended Phenotype

We'll talk about the idea of free will tonight in class to some extent as we explore the question of consciousness and its relationship to evolutionary theory. In the meantime, check this out:

Gordian worms live inside crickets for long periods, feeding on the cricket's diet. Once fully grown, they inject chemicals into the cricket's brain brainwashing it and forcing it to kill itself by jumping into the water. Once in water, the worm wriggles out of the writhing body and swims off in search of a mate.

.